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GeForce 9800 GT 1GB vs GeForce GT 430 1GB

Intro

The GeForce 9800 GT 1GB uses a 65/55 nm design. nVidia has clocked the core speed at 600 MHz. The GDDR3 memory works at a speed of 900 MHz on this model. It features 112 SPUs along with 56 TAUs and 16 ROPs.

Compare those specs to the GeForce GT 430 1GB, which comes with a GPU core clock speed of 700 MHz, and 1024 MB of GDDR3 RAM running at 900 MHz through a 128-bit bus. It also is made up of 96 SPUs, 16 Texture Address Units, and 4 ROPs.

(No game benchmarks for this combination yet.)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 430 1GB 60 Watts
GeForce 9800 GT 1GB 105 Watts
Difference: 45 Watts (75%)

Memory Bandwidth

Theoretically speaking, the GeForce 9800 GT 1GB is 100% faster than the GeForce GT 430 1GB overall, because of its greater bandwidth. (explain)

GeForce 9800 GT 1GB 57600 MB/sec
GeForce GT 430 1GB 28800 MB/sec
Difference: 28800 (100%)

Texel Rate

The GeForce 9800 GT 1GB is quite a bit (about 200%) more effective at texture filtering than the GeForce GT 430 1GB. (explain)

GeForce 9800 GT 1GB 33600 Mtexels/sec
GeForce GT 430 1GB 11200 Mtexels/sec
Difference: 22400 (200%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce 9800 GT 1GB is the winner, and very much so. (explain)

GeForce 9800 GT 1GB 9600 Mpixels/sec
GeForce GT 430 1GB 2800 Mpixels/sec
Difference: 6800 (243%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Please note that the price comparisons are based on search keywords, and might not be the exact same card listed on this page. We have no control over the accuracy of their search results.

GeForce 9800 GT 1GB

Amazon.com

Other US-based stores

GeForce GT 430 1GB

Amazon.com

Other US-based stores

Specifications

Model GeForce 9800 GT 1GB GeForce GT 430 1GB
Manufacturer nVidia nVidia
Year July 2008 October 2010
Code Name G92a/b GF108
Fab Process 65/55 nm 40 nm
Bus PCIe x16 2.0 PCIe x16
Memory 1024 MB 1024 MB
Core Speed 600 MHz 700 MHz
Shader Speed 1500 MHz 1400 MHz
Memory Speed 900 MHz (1800 MHz effective) 900 MHz (1800 MHz effective)
Unified Shaders 112 96
Texture Mapping Units 56 16
Render Output Units 16 4
Bus Type GDDR3 GDDR3
Bus Width 256-bit 128-bit
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 4.1
Power (Max TDP) 105 watts 60 watts
Shader Model 4.0 5.0
Bandwidth 57600 MB/sec 28800 MB/sec
Texel Rate 33600 Mtexels/sec 11200 Mtexels/sec
Pixel Rate 9600 Mpixels/sec 2800 Mpixels/sec

Memory Bandwidth: Memory bandwidth is the maximum amount of data (in units of MB per second) that can be transferred across the external memory interface within a second. It's calculated by multiplying the interface width by its memory clock speed. If the card has DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This is worked out by multiplying the total amount of texture units by the core speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.

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